[SI-LIST] Re: Power Supply Distribution/Filtering/Decoupling Guide
- From: "Martin Euredjian" <martin@xxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Mon, 12 Jan 2004 17:58:09 -0800
I'm approaching a 300MHz RLDRAM design at the moment and SI is back on my
radar. That's why what I saw on a high-performance motherboard such as this
one caught my attention.
-Martin
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Charles Grasso
Sent: Monday, January 12, 2004 6:20 PM
To: martin@xxxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Power Supply Distribution/Filtering/Decoupling
Guide
Thanks for the info Martin. I learn more from things that work - but
shouldn't.!!
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Martin Euredjian
Sent: Monday, January 12, 2004 5:08 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Power Supply Distribution/Filtering/Decoupling
Guide
So... I just got one of the new Intel D875PBZ motherboards (3.6GHz, 800MHz
FSB, etc.). In looking at it, one of the things that caught my eye
immediatlely was wasn't there. I was expecting lots of decoupling
capacitors, particularly surrounding certain chips. To my surprise, the
design has absolutely no components on the bottom and an (appartent) handful
of decouplers on the top layer.
With all the talk and controversy on this forum, application notes, papers
and books describing gargantuan capacitor trees as a requirement for good
signal integrity, reduce RFI, etc. it's always been a surprise to run across
product after product that does not seem to fit the proposed model very
well. Am I missing something fundamental here?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Euredjian
eCinema Systems, Inc.
voice: 661-305-9320
fax: 661-775-4876
martin@xxxxxxxxxxxxxx
ecinema@xxxxxxxx
www.ecinemasys.com
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
